x=y+2
y=x-2
The y value at the x axis (x=0) will be -2, so graph (0, -2). Let's calculate a few more points by varying x and calculating y:
if x=2, y=2-2=0
(2, 0)
similarly:
(1, -1)
(5, 3)
Graph those points, then draw a line connecting them all. That's the graph of x=y+2.
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It would be less steep
Graph and Table: http://i50.tinypic.com/szhr4k.png
x=1 and x=-7 are.
9 plus 7 equals 144. Generally, x plus y = x(x+y).
x=-1/2